package com.itheima.patterns.builderpattern.builder.demo1;

public class Director {
    //声明builder类型的变量
    private Builder builder;
    
    public Director(Builder builder) {
        this.builder = builder;
    }
    
    //组装自行车的功能
    public Bike construct() {
        builder.buildFrame();
        builder.buildSeat();
        return builder.createBike();
    }
}